Walker



FIG. 1 is a front/right-side perspective view of a preferred embodiment of the walker according to the present design;

FIG. 2 is a left-side elevational view of the walker of FIG. 1;

FIG. 3 is a right-side elevational view of the walker of FIG. 1;

FIG. 4 is a front elevational view of the walker of FIG. 1;

FIG. 5 is a rear elevational view of the walker of FIG. 1;

FIG. 6 is a bottom plan view of the walker of FIG. 1; and,

FIG. 7 is a top plan view of the walker of FIG. 1. 

The ornamental design for a walker, as shown and described. 